102251143249 has 2 divisors, whose sum is σ = 102251143250. Its totient is φ = 102251143248.

The previous prime is 102251143231. The next prime is 102251143259. The reversal of 102251143249 is 942341152201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89001982224 + 13249161025 = 298332^2 + 115105^2 .

It is a cyclic number.

It is not a de Polignac number, because 102251143249 - 2⁷ = 102251143121 is a prime.

It is not a weakly prime, because it can be changed into another prime (102251143259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51125571624 + 51125571625.

It is an arithmetic number, because the mean of its divisors is an integer number (51125571625).

Almost surely, 2^102251143249 is an apocalyptic number.

It is an amenable number.

102251143249 is a deficient number, since it is larger than the sum of its proper divisors (1).

102251143249 is an equidigital number, since it uses as much as digits as its factorization.

102251143249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 102251143249 in words is "one hundred two billion, two hundred fifty-one million, one hundred forty-three thousand, two hundred forty-nine".